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The most significant feature of Apple Watch 6 is the Blood Oxygen Monitor. It’s the main thing that makes it different from the previous series. This feature is also known as SPO2. This value is the measure of the amount of oxygen in red blood cells. Measuring how much oxygen your blood has is an important thing these days because low oxygen in your red blood cells may be one of the earliest signs of a Coronavirus infection. This factor will surely affect the sales of the new Apple Watch and other smartwatches capable of measuring SPO2.  

However, the Apple Watch 6 is not alone as many other smartwatches from brands like Xiaomi and Honor have the blood oxygen monitoring feature. 

As an Apple Watch 6 owner you will first need to set up certain things in order to use this feature. Also, the Apple Watch won’t be able to measure oxygen levels in your blood if your iPhone has an older iOS version. Both your Apple Watch and iPhone require the latest Apple operating systems to use this feature. 

In this article, you will get to see how you can use blood oxygen monitoring feature on Apple Watch 6 with a step by step tutorial. So, without wasting any more time, let’s get started. 

Checking SPO2 on Apple Watch 6

Here are the instructions to use this feature on your Apple Watch: 

  1. First of all, make sure you have Apple Watch Series 6 in order to check oxygen levels in your blood. 
  2. While setting up your watch with the iPhone, please make sure to set up the SPO2 feature appropriately. 
  3. While setting up your iPhone with your watch, all you need to do is simply tap the Digital Crown button to enable the app screen. 
  4. After that, you have to locate the icon that has blue and red lines and a circle around the white backdrop. 
  5. Once you find the icon, select it by tapping on it. 
  6. You will need to follow the instructions on your screen after that.
  7. Now make sure your Apple Watch is not loose on your wrist. You need to make sure that the strap fits tightly. At the same time, it should not be tied too tightly. It should be a snug fit on your wrist. 
  8. Then ensure that the watch display is faced upward. 
  9. Also, make sure to keep your wrist stable and don’t shake your wrist while it tracks the oxygen in your blood. 
  10. After that, you can hit the Start button to begin the blood oxygen evaluation process. You will see a 15-second countdown timer on your screen. 
  11. Once the timer finishes, you will see the oxygen levels in your blood on the screen of your Apple Watch. 
  12. That is how you can simply check your blood oxygen with an Apple Watch 6. 

Keep in mind that the results the Apple Watch provides are not always accurate. In many cases, it has been noted that temperature can affect the accuracy of the monitor. For example, if the temperature is too low, it may show you an inaccurate blood oxygen ratio. 

If you have a tattoo on your wrist, it might also influence the reading of the blood oxygen. Therefore, the reading you see is just for acknowledgement purposes and cannot be trusted for medical conditions. 

 How Much Oxygen is Sufficient in Your Blood? 

 A healthy blood oxygen level can be 95-100% as per the British Lung Foundation. 

Even though the reading of the wearable might not be perfect, they are useful to tell whether you have low oxygen in your blood or not. 


Apple Watch Series 6 costs 399 USD, and that’s why it is one of the most costly smartwatches to check blood oxygen level. Being an Apple product, it is far better than other cheap alternatives. It has a perfect design and build that you may not see in other affordable products. 

That is all that can be said about the product for now. We hope you have found this information practical and helpful. 

Source : https://gotrustblog.com/blood-oxygen-monitor-in-apple-watch-6-how-to-use-it/

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